.top-nav {
    width: 100%;
    height: 30px;
    background: #f2f2f2;
    border-bottom: 1px solid #777;
}

.top-nav .row{
    height: 30px;
    width: 1200px;
    margin: 0 auto;
}
.top-nav .row li{
    height: 30px;
    line-height: 30px; 
    padding-right: 10px;
    cursor: pointer;   
}
.top-nav .row li:hover{
    color: #ff7000;
}
.top-nav .row li.space{
    flex-grow: 1;
}

.main {
    width: 980px;
    margin: auto;
    background: #fff;
}

.top-search {
    display: flex;
    width: 100%;
    height: 120px;
}

.top-search img {
    width: 150px;
    height: 60px;
    margin-top: 29px;
    margin-bottom: 17px;
}